I have tried out Gnome, KDE, Lxqt and Xfce on a regular desktop and all of them feel nice. I haven’t tried many DE’s on a laptop.
Are there any particular DE’s you like on a laptop, because of things like power consumption and efficiency that would not come normally into consideration for a desktop?
Gnome hands down has the best laptop experience. If you follow the intended workflow of using tiled windows and many workspaces. You can get to a very large number of windows, without getting lost, even with just the laptop screen.
Additionally the paradigm does translate well to a desktop for the times you are docked.
Gnome is also amazing for laptops with touchscreens
The only problem is that it only supports half tiling, which is quite annoying if you are using large screens.